Dongle instead of wifi at Troutbeck Head

Hi,

We're booked for a few days next week at Troutbeck Head which we know is a wifi-free zone.  As the weather is looking quite poor, OH thought he might catch up on some work but will need internet connectivity.   In the past we've used dongles in wifi-free areas, but the connection depends heavily on which phone provider has the strongest signal in the area.  Please could anyone shed some light on our best bet - we already have O2 and Vodafone dongles which could be topped up but maybe there's a better service provider in the Troubeck Head area.  Any advice please?

Thanks.